Identification_Information: Citation: Citation_Information: Originator: Pinney, D.S. Publication_Date: 1997 Title: Surficial geologic map of the Tanana B-1 Quadrangle, central Alaska Geospatial_Data_Presentation_Form: geodatabase Series_Information: Series_Name: Report of Investigation Issue_Identification: RI 97-15C Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 5 p., 1 sheet, scale 1:63,360 Online_Linkage: https://doi.org/10.14509/2553 Description: Abstract: Report of Investigation 97-15C, Surficial geologic map of the Tanana B-1 Quadrangle, central Alaska, provides detailed (1:63,360-scale) surficial geologic mapping of the Tanana B-1 Quadrangle (250 square miles; equivalent to four 7.5 minute quadrangles). The area is part of the Manley Hot Springs-Tofty mining districts and adjacent to the Rampart mining district north of the Tanana A-1 and A-2 Quadrangles. The complete report, geodatabase, and ESRI fonts and style files are available from the DGGS website: http://doi.org/10.14509/2553. Purpose: The Tanana B-1 quadrangle lies between the villages of Rampart, on the Yukon River, and Manley Hot Springs, at the terminus of the Elliot Highway. When this project was published, the area towns were not part of any municipal or local governmental jurisdiction. The investigation of gold, tin, and other mineral occurrences in conjunction with comprehensive geologic mapping and recently acquired geophysical data will provide a scientific basis for continued mineral exploitation that will economically benefit the region's inhabitants and the State of Alaska. Surficial geologic mapping identifies sources of construction materials and evaluates the type and severity of geologic constraints to future development in the region. Supplemental_Information: This geodatabase is organized according to the AK GeMS mapping schema Hendricks, M.D., Ekberg, P.G., Athey, J.E., Wyatt, W.C., Willingham, A.L., and Naibert, T.J., 2021, AK GeMS data dictionary: A description of the Alaska geologic mapping schema: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 170, 10 p. https://doi.org/10.14509/30669. The distribution package includes ESRI fonts and style files, along with usage instructions. Further documentation of the symbology is provided by Ekberg, P.G., Hendricks, M.D., and Athey, J.E., 2021, AK GeMS symbology: A description of the AK GeMS style file: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 169, 7 p. https://doi.org/10.14509/30584 Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1996 Currentness_Reference: ground condition Status: Progress: complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -150.534267 East_Bounding_Coordinate: -149.963903 North_Bounding_Coordinate: 65.511862 South_Bounding_Coordinate: 65.237727 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Theme_Keyword: Alluvial Theme_Keyword: Alluvial Deposits Theme_Keyword: Alluvial Fan Theme_Keyword: Alluvium Theme_Keyword: Colluvial Deposits Theme_Keyword: Colluvium Theme_Keyword: DGGS Theme_Keyword: Debris Flow Deposit Theme_Keyword: Dunes Theme_Keyword: Eolian Theme_Keyword: Fan Theme_Keyword: Floodplain Theme_Keyword: GeMS Theme_Keyword: GeMS NCGMP09 Theme_Keyword: Geodatabase Theme_Keyword: Geologic Theme_Keyword: Geologic Map Theme_Keyword: Geologic Materials Theme_Keyword: Geology Theme_Keyword: Geomorphology Theme_Keyword: Glacial Theme_Keyword: Glacial Deposits Theme_Keyword: Lacustrine Theme_Keyword: Lacustrine Sedimentation Theme_Keyword: Landslide Deposit Theme_Keyword: Placer Gold Theme_Keyword: STATEMAP Project Theme_Keyword: Sand Theme_Keyword: Sand and Gravel Theme_Keyword: Silt Theme_Keyword: Slope Instability Theme_Keyword: Solifluction Theme_Keyword: Surficial Theme_Keyword: Surficial Geologic Map Theme_Keyword: Surficial Geology Theme_Keyword: Talus Place: Place_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Place_Keyword: Aloha Creek Place_Keyword: Baldry Mountain Place_Keyword: Boulder Creek Place_Keyword: California Creek Place_Keyword: Chapman Creek Place_Keyword: Chicken Creek Place_Keyword: Elephant Mountain Place_Keyword: Florida Creek Place_Keyword: Garnet Creek Place_Keyword: Goldpan Creek Place_Keyword: Granite Creek Place_Keyword: Hoosier Creek Place_Keyword: Hot Springs Mining District Place_Keyword: Hunter Creek Place_Keyword: Jordan Creek Place_Keyword: Joseph Creek Place_Keyword: Lost Creek Place_Keyword: Marshall Creek Place_Keyword: Miller Creek Place_Keyword: Minook Creek Place_Keyword: Nevada Creek Place_Keyword: Rampart Creek Place_Keyword: Rampart Mining District Place_Keyword: Rock Creek Place_Keyword: Ruby Creek Place_Keyword: Russian Creek Place_Keyword: Sixmile Creek Place_Keyword: Slate Creek Place_Keyword: Spruce Creek Place_Keyword: Triple Creek Place_Keyword: Trout Creek Place_Keyword: Yukon River Stratum: Stratum_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Stratum_Keyword: Yukon-Tanana Upland Temporal: Temporal_Keyword_Thesaurus: Walker, J.D., Geissman, J.W., Bowring, S.A, and Babcock, L.E., comp., 2012, Geologic Time Scale v. 4.0: Geological Society of America Temporal_Keyword: Quaternary Access_Constraints: This report, map, and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below). Use_Constraints: Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys Contact_Position: Metadata Manager Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: (907)451-5020 Contact_Facsimile_Telephone: (907)451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays Contact_Instructions: Please view our website (https://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible. Data_Set_Credit: Funding for the geologic mapping for this project was provided by the U.S. Geological Survey STATEMAP Program under award number 147-HQ-96AG and by the Alaska State Legislature. Geologic map conversion to the GeMS standard was funded by the USGS National Cooperative Geologic Mapping Program under StateMap award number G20AC00367, 2020, and the State of Alaska General Fund. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government. Cross_Reference: Citation_Information: Originator: Reifenstuhl, R.R. Originator: Dover, J.H. Originator: Pinney, D.S. Originator: Newberry, R.J. Originator: Clautice, K.H. Originator: Liss, S.A. Originator: Blodgett, R.B. Originator: Bundtzen, T.K. Originator: Weber, F.R. Publication_Date: 1997 Title: Geologic map of the Tanana B-1 Quadrangle, central Alaska Series_Information: Series_Name: Report of Investigation Issue_Identification: RI 97-15A Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 17 p., 1 sheet, scale 1:63,360 Online_Linkage: https://doi.org/10.14509/2551 Cross_Reference: Citation_Information: Originator: Reifenstuhl, R.R. Originator: Dover, J.H. Originator: Newberry, R.J. Originator: Clautice, K.H. Originator: Liss, S.A. Originator: Blodgett, R.B. Originator: Bundtzen, T.K. Originator: Weber, F.R. Publication_Date: 1997 Title: Interpretive geologic bedrock map of the Tanana B-1 Quadrangle, central Alaska Series_Information: Series_Name: Report of Investigation Issue_Identification: RI 97-15B Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 15 p., 1 sheet, scale 1:63,360 Online_Linkage: https://doi.org/10.14509/2552 Cross_Reference: Citation_Information: Originator: Pinney, D.S. Publication_Date: 1997 Title: Derivative geologic materials map of the Tanana B-1 Quadrangle, central Alaska Series_Information: Series_Name: Report of Investigation Issue_Identification: RI 97-15D Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 1 sheet, scale 1:63,360 Online_Linkage: https://doi.org/10.14509/2554 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: This data release provides legacy geospatial data converted to the GeMS and AK GeMS specifications. Attribute fields within each feature class are populated using corresponding applicable values from the GeMS and AK GeMS specifications. When known, certainty in attribute interpretation is indicated in the relevant fields. Attribute accuracy varies throughout the map and is scale-dependent. Logical_Consistency_Report: All polygon features were topologically validated according to specifications of the AK GeMS geologic mapping schema. Completeness_Report: This publication is a DGGS Report of Investigations (RI). An RI is the completed product of original research and analysis, and RIs use professional cartography and undergo rigorous peer review, editing, and revision. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: This data release provides legacy geospatial data converted to the GeMS and AK GeMS specifications. To record the originating authors' degree of confidence in the location of features, the data include descriptive fields within each feature class and accompanying orientation and location confidence lookup tables. When location accuracy values are unavailable, users must infer positional accuracy based on standard geologic mapping practices of the investigation era. Field stations were located using hand-held GPS units, however for fieldwork conducted before 2000, Selective Availability limited location accuracy of the coordinates to roughly 100 meters. Certainty in feature boundaries or location varies throughout the map. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Eakin, H.M. Publication_Date: 1912 Title: The Rampart and Hot Springs regions Series_Information: Series_Name: Bulletin Issue_Identification: B 520 Publication_Information: Publication_Place: United States Publisher: U.S. Geological Survey Other_Citation_Details: p. 271-287 Online_Linkage: https://dggs.alaska.gov/pubs/id/4819 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1912 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Eakin, H.M., 1912, p. 271-287 Source_Contribution: Surficial geologic mapping Source_Information: Source_Citation: Citation_Information: Originator: Eakin, H.M. Publication_Date: 1913 Title: A geologic reconnaissance of a part of the Rampart Quadrangle, Alaska Series_Information: Series_Name: Bulletin Issue_Identification: B 535 Publication_Information: Publication_Place: United States Publisher: U.S. Geological Survey Other_Citation_Details: 38 p., 2 sheets, scale 1:250,000 Online_Linkage: https://dggs.alaska.gov/pubs/id/3412 Source_Scale_Denominator: 250000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1913 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Eakin, H.M., 1913 Source_Contribution: Surficial geologic mapping Source_Information: Source_Citation: Citation_Information: Originator: Ekberg, P.G. Originator: Hendricks, M.D. Originator: Athey, J.E. Publication_Date: 2021 Title: AK GeMS symbology: A description of the AK GeMS style file Series_Information: Series_Name: Miscellaneous Publication Issue_Identification: MP 169 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 7 p Online_Linkage: https://doi.org/10.14509/30584 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2021 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Ekberg, P.G. and others, 2021 Source_Contribution: GIS analysis and digital cartography Source_Information: Source_Citation: Citation_Information: Originator: Hendricks, M.D. Originator: Ekberg, P.G. Originator: Athey, J.E. Originator: Wyatt, W.C. Originator: Willingham, A.L. Originator: Naibert, T.J. Publication_Date: 2021 Title: AK GeMS data dictionary: A description of the Alaska geologic mapping schema Series_Information: Series_Name: Miscellaneous Publication Issue_Identification: MP 170 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 10 p Online_Linkage: https://doi.org/10.14509/30669 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2021 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Hendricks, M.D. and others, 2021 Source_Contribution: GIS analysis and digital cartography Source_Information: Source_Citation: Citation_Information: Originator: Newberry, R.J. Originator: Clautice, K.H. Publication_Date: 1997 Title: Compositions of placer gold in the Rampart-Eureka-Manley-Tofty area, eastern Tanana and western Livengood quadrangles, central interior Alaska, determined by electron microprobe analysis Series_Information: Series_Name: Public Data File Issue_Identification: PDF 97-49 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 49 p Online_Linkage: https://doi.org/10.14509/1813 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1997 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Newberry, R.J. and Clautice, K.H., 1997 Source_Contribution: Surficial geologic mapping Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey National Cooperative Geologic Mapping Program Publication_Date: 2020 Title: GeMS (Geologic Map Schema) - A standard format for the digital publication of geologic maps Series_Information: Series_Name: Techniques and Methods Issue_Identification: TM 11-B10 Publication_Information: Publication_Place: United States Publisher: U.S. Geological Survey Other_Citation_Details: 1 p Online_Linkage: https://dggs.alaska.gov/pubs/id/30585 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2020 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020 Source_Contribution: GIS analysis and digital cartography Source_Information: Source_Citation: Citation_Information: Originator: Yeend, Warren Publication_Date: 1990 Title: Gold placers, geomorphology, and paleo-drainage of Eureka Creek and Tofty areas, Alaska Series_Information: Series_Name: Bulletin Issue_Identification: B 1946 Publication_Information: Publication_Place: United States Publisher: U.S. Geological Survey Other_Citation_Details: p. 107-109 Online_Linkage: https://dggs.alaska.gov/pubs/id/4503 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1990 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Yeend, Warren, 1990, p. 107-109 Source_Contribution: Surficial geologic mapping Process_Step: Process_Description: Surficial geologic mapping - Surficial geologic mapping - Fieldwork for surficial geologic investigations, including ridge and valley traverses, road-cut investigations, and river exposures, was conducted approximately between April 30 and July 4, 1996, by a surficial geologist. Field notes and sediment samples were collected throughout the area for surficial investigations. Surficial mapping involved using sources cited below on a regular basis for checking and correlating general units. The surficial mapper recorded observations on co-registered acetate overlays on 1:50,000-scale (nominal) color-infrared aerial photographs and directly on 1:63,360-scale topographic base maps. Stations were located using air photos and topographic maps. The overlay information was transferred to a paper 1:63,360-scale USGS topographic base using a zoom transfer scope. Source_Used_Citation_Abbreviation: Eakin, H.M., 1912, p. 271-287 Source_Used_Citation_Abbreviation: Eakin, H.M., 1913 Source_Used_Citation_Abbreviation: Newberry, R.J. and Clautice, K.H., 1997 Source_Used_Citation_Abbreviation: Yeend, Warren, 1990, p. 107-109 Process_Date: 1997 Process_Step: Process_Description: Geologic map compilation - The geologic data were digitized from a mylar compilation of geologic field maps produced on USGS topo bases of the area. Contacts and other geologic features were determined visually using topographic maps at scales of 1:63,360 and 1:25,000, field station notes, and GPS location data. Geologic features were visually hand-plotted onto stable mylar bases from the field maps and then digitally compiled and plotted using ArcInfo software. The map and report received technical review and editing by several scientists familiar with the subject matter. When deemed appropriate, the authors incorporated the reviewers' suggestions into the final draft. Process_Date: 1997 Process_Step: Process_Description: GIS analysis and digital cartography - This data distribution package's geologic and geographic features were organized and attributed according to the AK GeMS geologic mapping schema. The data were then programmatically transformed to provide download options in three formats: (1) an AK GeMS data package that includes the complete AK GeMS database and associated files, (2) a GeMS data package that is a conversion of the AK GeMS database into the base GeMS standard published by the USGS, and (3) a shapefile data package that includes two simple shapefile representations of the data. Source_Used_Citation_Abbreviation: Ekberg, P.G. and others, 2021 Source_Used_Citation_Abbreviation: Hendricks, M.D. and others, 2021 Source_Used_Citation_Abbreviation: U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020 Process_Date: 2021 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: vector Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 5 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -153 Latitude_of_Projection_Origin: 0 False_Easting: 500000.000000 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: .00000001 Ordinate_Resolution: .00000001 Planar_Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: NAD27 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.40000000037 Denominator_of_Flattening_Ratio: 294.978698199999997 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: tanana_b1_quad_surficial_ak_gems_db_pkg Entity_Type_Definition: Geodatabase, layer files, style files, and fonts Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Entity_Attribute_Layer_Name: tanana_b1_quad_surficial_ak_gems_db_pkg Detailed_Description: Entity_Type: Entity_Type_Label: tanana_b1_quad_surficial_gems_db_pkg Entity_Type_Definition: Geodatabase, layer files, style files, and fonts Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Entity_Attribute_Layer_Name: tanana_b1_quad_surficial_gems_db_pkg Detailed_Description: Entity_Type: Entity_Type_Label: tanana_b1_quad_surficial_gems_shapefile_pkg Entity_Type_Definition: Shapefiles and open data files Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Entity_Attribute_Layer_Name: tanana_b1_quad_surficial_gems_shapefile_pkg Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys Contact_Position: Metadata Manager Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: (907)451-5020 Contact_Facsimile_Telephone: (907)451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays Contact_Instructions: Please view our website (https://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible. Resource_Description: RI 97-15C Distribution_Liability: The State of Alaska makes no expressed or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product. Standard_Order_Process: Non-digital_Form: DGGS publications are available as free online downloads or you may purchase paper hard-copies or digital files on CD/DVD or other digital storage media by mail, phone, fax, or email from the DGGS Fairbanks office. To purchase this or other printed reports and maps, contact DGGS by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard. Turnaround time is 1-2 weeks unless special arrangements are made and an express fee is paid. Shipping charge will be the actual cost of postage and will be added to the total amount due. Contact us for the exact shipping amount. Fees: Contact DGGS for current pricing Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: geodatabase Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://doi.org/10.14509/2553 Fees: Free download Metadata_Reference_Information: Metadata_Date: 20211229 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys Contact_Person: Simone Montayne Contact_Position: Metadata Manager Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: (907)451-5020 Contact_Facsimile_Telephone: (907)451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Use_Constraints: If the user has modified the data in any way they are obligated to describe the types of modifications they have performed in the supporting metadata file. User specifically agrees not to imply that changes they made were approved by the Alaska Department of Natural Resources or Division of Geological & Geophysical Surveys. Metadata_Extensions: Online_Linkage: https://dggs.alaska.gov/metadata/dggs.ext Profile_Name: dggs metadata extensions